top is a Unix/Linux/BSD program to show what processing are running. It can show the top users of CPU or memory.
Questions tagged [top]
302 questions
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top - Show graphical load on startup (interactive commands 1, t, m)
I'd like to see the current load (cpu + mem) of my Server (rhel 7.x) in a graphical fashion and only have top (and other built-in commands) available, tools like htop (that need to be installed) are not available.
Currently I start top and then type…
hinneLinks
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Process Appears and Disappears Randomly in `top`
Very similar in theme to this question, but that refers specifically to high-load processes; in my case, it's a quite unobtrusive task. It's not a matter of falling off the bottom of the terminal space; I can filter by that PID and see the one line…
Brian A. Henning
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What does lower case "g" mean in top output?
Can someone please help explain this, I have always used to interprete the "g" in top output to be size in Gigabytes even though the convention is to use uppercase "G" but now I am having second thoughts.
I was monitoring my system memory usage when…
AguThadeus
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How to use top without interactivity?
I want to periodically monitor the CPU usage and plot in time series. Not having much knowledge, I plan to use the top command, something like this question (Monitor cpu usage (and perhaps memory using) for a single process simple as possible).…
user180574
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Why sum of all process CPU(%) is not equal to total cpu(%) utilisation in top output
I have decided to create a simple monitoring tool for my Linux server. For the CPU montoring I relied on top command but I have feq queries on that.
In the attached Top Command image of top command output, you can see the idle is 96.8% means CPU…
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Process memory-usage mismatch in a Kubernetes sidecar container
I have a sidecar container with the following resources:
resources:
limits:
memory: 512Mi
requests:
memory: 64Mi
However, when I run top, I see this:
envoy & pilot-agent seem to be using ~ 363MB & 61MB respectively
used memory at the…
Jon Bates
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What does top cpu percentage include?
I have a program that reads data from shared memory and send it to a non-blocking socket in a single-threaded manner. When I'm hammering the traffic into that application, I can only see the TOP cpu percentage about 60% and not going higher, even…
jaeyong
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Using `top` command shows PHP FPM processes using more memory than available
I've read this answer about understanding top, as well as man top, but I think I still have trouble turning the presented data from top into actual information.
I'm logged on an Amazon EC2 instance which is part of a load-balanced group. It's…
dodov
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Confusing Memory output from top/ps aux (over 600% memory allocated)
I'm trying to get to the bottom of an issue where the oom-killer is killing certain jobs off on a server. The server has 48GB of physical ram, with 20GB of swap, and I'm trying to find out what processes are the ones using memory. Output from free…
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Unknown process on Centos 7 VPS "sysnetd" using lots of cpu
So I cant seem to find any information ANYWHERE on what this process, "sysnetd", does. I've run LSOF etc but nothing seems to provide any info I know what to do with. The /proc/pid folder also doesnt seem to provide any details (that I know what to…
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lsb_release called every few seconds
I have an odroid XU4 running the manufacturer-provided minimal Ubuntu 18.04. Every few seconds (it's not really consistent, but think between 5 and 30) I get a call to lsb_release. Sometimes it gets called with the -r flag, others with -i. This…
manugutito
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High I/O wait in apache tomcat server
Facing high I/O wait in apache tomcat server when the load increases.
Suspecting disk I/O is less when tomcat is running however. disk IO seems drops drastically when tomcat is running along with the load.
Other resources(CPU,RAM) are under…
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Centos 7 server performance problems. High load
I have a Centos 7 VPS at HostGator that has been very slow lately. HostGator have not been overly helpful in diagnosing the problem, insisting that everything is ok.
The server is a 4 core VPS with 8GB of RAM.
I figured out my cPanel backups are at…
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Why atop shows high CPU but sum of individual processes %CPU far smaller?
How can the sum of processes' CPU-% usage be lower than the total CPU load, according to atop and top, please?
I have a CPU reaching very high load (87%, for several hours) even though the sum of the individual processes as shown by atop is muchs…
jucor
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Where is my memory being consumed?
I have a Ubuntu 20.04 server which is reporting relatively low free RAM:
top - 11:28:31 up 5 days, 20:12, 3 users, load average: 0.18, 0.26, 0.27
Tasks: 268 total, 1 running, 267 sleeping, 0 stopped, 0 zombie
%Cpu(s): 0.1 us, 0.3 sy, 0.0…
Huskie69
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